[Hiring] Senior AI Engineer @CI&T

Role Description

At CI&T, we help large enterprises transform the potential of AI into real business impact with AI Deployment, AI-native execution, and tech-integrated business solutions.

You will build and maintain the core components teams use to ship agents:

• The Python SDK
• Agent and MCP templates
• Memory and context services
• The agent registry integration
• The FastAPI entry layer

You will often own one component end to end, as primary support.

Responsibilities:

• Build SDK features and framework adapters (Strands, Claude Agent SDK, LangGraph), including memory (AgentCore Memory short- and long-term, Redis), skills, prompt management integration, and evaluation hooks.
• Build and maintain agent and MCP server templates for AgentCore Runtime and ECS Fargate, over HTTP and A2A.
• Integrate with the AWS Agent Registry: registration, approval flow, identity-scoped discovery.
• Build and support RAG and knowledge services (Bedrock Knowledge Bases, OpenSearch vector, ingestion pipelines).
• Write contract and integration tests.
• Keep the release parity gate green.
• Help use-case teams onboard, debug their agents, and feed what you learn back into the platform.
• Take part in on-call or office hours, and in RCAs.

Qualifications

• Advanced English proficiency (C1 or above), with autonomy to communicate directly with international stakeholders.
• Extensive years of experience in software engineering, with strong Python: FastAPI or similar, async, packaging, testing.
• 1+ year building LLM-powered applications or agents that reached real users (pilot or production).
• Experience with tool calling, prompt design and handling model failures.
• Familiarity with at least one agent framework (Strands, LangGraph, Claude Agent SDK, OpenAI Agents SDK, CrewAI, LlamaIndex).
• AWS experience: Lambda, ECS/Fargate, IAM, S3, DynamoDB, and Bedrock or SageMaker.
• Experience with RAG: embeddings, vector stores, chunking and retrieval tuning.
• Comfortable with CI/CD, containers (Docker) and infrastructure-as-code (Terraform preferred).
• Preferred Bedrock AgentCore (Runtime, Harness, Gateway, Memory, Identity, Code Interpreter).
• MCP server development.
• A2A protocol. Redis/ElastiCache, OpenSearch.
• Langfuse or similar LLM observability, prompt management and evaluation tools.
• Experience writing internal developer documentation and samples (notebooks, quick starts).

Requirements

• AWS certifications and recent study/project history in agent technology will be accepted in lieu of multiple years of hands-on experience.

Benefits

• Health and dental insurance
• Meal and food allowance
• Childcare assistance
• Extended paternity leave
• Partnership with gyms and health and wellness professionals via Wellhub (Gympass) TotalPass
• Profit Sharing and Results Participation (PLR)
• Life insurance
• Continuous learning platform (CI&T University)
• Discount club
• Free online platform dedicated to physical, mental, and overall well-being
• Pregnancy and responsible parenting course
• Partnerships with online learning platforms
• Language learning platform
• And many more!

More details about our benefits here: https://ciandt.com/br/pt-br/carreiras

Company Description

At CI&T, inclusion starts at the first contact. If you are a person with a disability, it is important to present your assessment during the selection process.

We have a dedicated Health and Well-being team, inclusion specialists, and affinity groups who will be with you at every stage. Count on us to make this journey side by side.